Whether the epithelial cell 66.6 is serious or not should be determined according to the examination items done. Urine routine, leukorrhea routine, and cervical pre-cancer screening need to check the number of squamous epithelial cells, and the clinical significance of the number of squamous epithelial cells varies with different items, so you should consult with your doctor for details. 1. Urine routine: the normal number of squamous epithelial cells in urine routine is less than 50. If there are more than 50 or more in urine test, it suggests that there may be infections in the urinary system. 2. Leukorrhea routine: the normal number of squamous epithelial cells in leukorrhea routine is less than 5+, and if the result is more than 5+, it suggests that there may be vaginal inflammation or cervicitis. 3. Cervical pre-cancer screening: cervical exfoliative cytology requires the number of squamous epithelial cells to be >5000, if the number is too small, it will affect the diagnostic results. Generally speaking, the simple epithelial cell test results do not have special clinical significance, if there is also the urethra, vagina and other symptoms should be taken seriously, timely medical treatment, under the guidance of professional doctors to identify the causes of targeted treatment. In daily life, should pay attention to personal hygiene, keep the vulva clean, wear breathable underwear, and maintain a good mood.